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cricket20 [7]
2 years ago
11

Two cars, a and b, are traveling with the same speed of 40. 0 m/s, each having started from rest. Car a has a mass of 1200 kg, a

nd car b has a mass of 2000 kg. Compared to the work required to bring car a up to speed, how much additional work is required to bring car b up to speed?.
Physics
1 answer:
Goshia [24]2 years ago
7 0
W=K_B-K_A
W=m_B v^2/2-m_A v^2/2=(m_B-m_A)v^2/2
W=(2000-1200) 〖40〗^2/2=640000 J=640 kJ.

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